Tool for use on noncircular work



D. BOURQUE TOOL FOR USE ON NONCIRCULAR WORK r'lled May 5, 1923jaktfeniov: flavid Bourgu Patented Oct. 28, 1924.

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PATENT DAVID BOURQUE, OF AMESBURY, MASSACHUSETTS, ASSIGNOR TO G. W. J'.MURPHY COMBANY,OF AMES'B UR-Y, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

TOOL non use on NONCIRGULAR WORK.

Application filed May 5,

To all whom z't may concern:

Be it known that I, DAVID BOUR UE, a citizen of the United States, and aresident of Amesbury, county of Essex, and State of Massachusetts, haveinvented an Improvement in Tools for Use on Noncircular Work, of whichthe following description, in connection with the accompanying drawings,is a specification, like characters on the drawings representing likeparts.

This invention relates to tools for operating on non-circular work such,for example, as the parts of turnbutton fasteners which have anelliptical portion and the purpose is to provide a hand tool which willfacilitate the proper positioning of such fastener parts or. similarnon-circular or asymmetrical elements in relation to the member to whichthey are attached.

In order that my invention may be more readily understood I have hereshown as a specific example thereof a punch for preparing automobilecurtains and similar members for the attachment thereto of the eyeletsof turnbutton fasteners. The invention will be readily understood fromthe following description taken in connection. with the accompanyingdrawings, wherein:

Fig. 1 is a fragmentary edge view of an automobile curtain showingsuccessive steps in the attachment of eyelets thereto and showing thepunch in rear end elevation;

Fig. 2 is a front end elevation of the punch; and

Fig. 3 is a longitudinal section of the punch on the line 33 of Fig. 1.

Referring to Fig. 1 of thedrawings, I have there illustrated a portionof an automobile curtain 5 along the edge of which is to be attached aseries of eyelets for turnbutton fasteners such as the eyelets 7illustrated at the left hand of the figure.

Such eyelets may be of the form shown in the patent to Bourque No.1,385,039, dated July 19, 1921, embodying a central elliptical opening 9to embrace the elliptical body of the turnbutton fastener. It will beclear that to give a seemly' appearance to the work and to facilitatethe securing together of the fasteners, the axes of the ellipse 9 shouldbe definitely related or oriented to the edge of the curtain as, forinstance, in the manner shown by having the major axis parallel thereto.The tool particularly described in the present application is de- 1923.Serial No. 636,977.

signed to prepare the curtain for the appli cation of the eyelets 7 andto permit this work to be done in an expeditious and accurate manner.

Referring to Fig. l, the curtain is prepared by punching therefrom anopening 11 corresponding to the opening 9 in the eyelet and a series ofopenings 13 about the same to receive the securing prongs of the eye'let and these openings must be definitely oriented to the edge of thecurtain. Reading from right to left of the figure the curtain may beprovided with center marks 15 where the eyelets are to be positioned andthe openings are formed at these locations by means of the punch 17 andthe eyelet finally inserted. It will be understood that in the customaryoperation the entire series of center marks are made and then the entireseries of openings punched and finally the eyelets inserted but theseveral steps have been illustrated, one beside the other, in Fig. l.

The punch 17 is shown more in detail'in Figs. 2 and 3 and may embody astock, on one end face 19 of which is provided the annular cutting blade21 adapted. to form the opening 11 and around which are arranged thecutting blades 23 which cut the prong-receiving slits or openings 13.The right hand end of the stock viewing Fig. 3

provides a handle and the other end'face may be struck with a mallet orother tool to form the openings. The annular blade 21 is convenientlysupported by a slidable block 25 fitting within the same and normallypressed to the left in Fig. 3 by the spring 27. In the punchingoperation this part yields as will be well understood and as the punchis removed it serves as an ejector for clearing the blade of. theportion. of the curtain punched out from the opening 11.

It will be seen by reference to Fig. 1 that from the point of view ofthe operator using the punch the cutting blades and the work are hidden.The important feature of the invention is the provision of means wherebythe operator may position the punch and properly orient it so that theopenings formed thereby will be in a proper angular position relative tothe work. In the example of the invention illustrated the purpose is todispose the major axis of the opening 11 parallel to the edge of thecurtain and to facilitate this the stock may be provided With a lateralprojection herein shown as a relatively long arm 27 extending from theside thereof preferably closely adjacent to end face 19 and extending inthe direction of the major axis of the ellipse. As Will be apparent fromFig. 1, this arm 27 serves as a guide and may be brought parallel Withthe edge of the curtain 5, the length thereof rendering it easy torecognize any inaccurate position of the punch and the punch can thus bequickly positioned and the hole accurately made.

To further facilitate the positioning and orientation of the punch it ispreferably provided With a positioning element Which may serve a pivoton which the tWo may be turned prior to the actual punching operationproperly to orient it With the Work. Herein there is provided. centrallyof the ejector block 25 a point 29 which preferably takes the form of aspindle slidably mounted on the block25 and normally held projectedbeyond the face of the cutter '21 bythe spring 31. In the operation ofthe punch it may be presented to the Work in somewhat angular positionand the point 29 applied to the center mark 15, thus properly locatingthe hole Which is to be made. The punch may then be brought erect topunching position and the point 29 Will serve-as a pivot about which itmay be swung While the operator observes the tool from the point of viewshown in Fig. 1 and properly orients it with the edge of the curtainWith the aid of the laterally extended arm 27. The punching operation isthen effected and the openings 11 and 13 formed, as also shown in Fig.1, in exact posit-ion and in accurate angular relation to the Work.

I have here described the orientation as effected by bringing the arminto parallelism With the edge of curtain 5. Obviously a temporary guideline might be utilized, for instance, a chalk line joining the centerpoints 15, and in the latter case the arm 2? could be brought intoalignment with such line.

I have described in detail a particular embodiment of my invention butit Will be understood that the principles thereof may be embodied inmany different mechanical forms and that the particularity of thedescription herein has been for the purpose of making the particularembodiment illustrated more readily comprehensible and not) for thepurpose of defining the scope of the invention. lVhat I claim as new anddesire to secure by Letters Patent I shall express in the followingclaims.

Claims:

1. A punch comprising a stock havingkat an end face cutters for forminga design requiring angular orientation and having a lateral extensionwhereby the punch may be oriented With respect to the Work Whenpresented thereto in punching position.

,2. A punch comprising a stock having at an end face cutters for forminga design requiring angular orientation and a central projecting pivotand having a lateral extension whereby the punch may be turned about thepivot and oriented with respect to the Work by the ai'dof'saidextensionWhen presented in punching position to the Work.

3. A punch comprising astock having at an end face cutters for forming adesign requiring angular orientation and a central spring-pressedprojecting point and having a lateral extension, whereby the punch maybe presented to the Work and positioned by said point and oriented aboutthe same by the aid of said extension.

A. A tool comprising a stock having at one end face a non-circularWork-engaging portion and a centrally located projecting point andhaving a lateral extension Whereby the tool may be presentedendwise tothe Work and positioned bysaid point and then revolved about the latterto orient 'it by the aid of'said extension.

5. A tool comprising a stock having at one end face Work-engaging meansand providing adjacent the other end a portion for manipulating the sameand a lateral extension from the stock near said first face fororienting the tool.

6. A tool comprising a stock having at one end face a non-circularWork-engaging portion and providing adjacent the other end a portion formanipulating the tool, there being a yie'ldable pilot on said end facefor positioning the tool and an arm ex tending laterally from the stockfor orienting the tool. I

7. A punch comprising a stock having at one end thereof an ellipticalcutter,:a spring pressed ejector in the cutter, a spring pressed point.projecting from the face of the ejector and an arm extending laterallyfrom the stock.

8. A punch comprisinga stock having at one end thereof an ellipticalcutter, a-springpressed ejector fitting the interior of the cutter, acentrally located point projecting from the end of the ejector and anarm extending laterally from the stock.

9. A punch having an annular blade, a spring supported ejector fittingthe interior of the blade, and having a central opening and a pointedspindle yieldably andslidably supp'erted'iin said opening.

In testimony whereof, I have signed my name to this specification.

DAVID Bounces.

